shrimp torture; bondage torture resembling a shrimp
Historical term for a form of bondage torture where the victim is bound in a cross-legged position with arms tied behind, and the rope is tightened until the ankles are forced toward the neck, resembling a curled shrimp.
Among the tortures of the Edo period was one called 'shrimp torture'.
Compound of 海老 (ebi, 'shrimp') + 責め (seme, 'torture'), from the resemblance of the bound posture to a curled shrimp.